Finding the Fourth Proportional to 2,606.90, 3,909.39 and 963.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.90 : 3,909.39 = 963.02 : x
2. Step 2: Convert to fraction form
   2,606.90/3,909.39 = 963.02/x
3. Step 3: Cross multiply
   2,606.90x = 3,909.39 × 963.02
4. Step 4: Simplify right side
   2,606.90x = 3,764,820.76
5. Step 5: Solve for x
   x = 3,764,820.76/2,606.90
6. Step 6: Final answer
   x = 1,444.18